Finding the Third Proportional to 58,136 and 89,472

Step by Step Solution

1. Step 1: Write the proportion equation
   58,136 : 89,472 = 89,472 : x
2. Step 2: Convert to fraction form
   58,136/89,472 = 89,472/x
3. Step 3: Cross multiply
   58,136x = 89,472 × 89,472
4. Step 4: Simplify right side
   58,136x = 8,005,238,784
5. Step 5: Solve for x
   x = 8,005,238,784/58,136
6. Step 6: Final answer
   x = 137,698.48